摘要
针对工程中提出的曲线梁桥的新课题，为了有效地进行全桥分析，获取设计所需的纵向、横向内力，文章采用高阶有限条法（ＨｉｇｈｏｒｄｅｒＦｉｎｉｔｅＳｔｒｉｐＭｅｔｈｏｄ）分析等截面曲线梁桥。其形函数用Ｈｅｒｍｉｔ函数法构造，形式简洁、运用能量原理从基于薄板的几何矩阵和基于线弹性的内力矩阵导出了单元刚度矩阵，采用ＦＯＲＴＲＡＮ－７７语言完成了编程工作．经过算例比较．说明了高阶曲线有限条法的简洁性和高精度性。
Curved girder bridge is a new task given by engineering practice.The paper adopts HO3-FSM to analyse curved bridge with same section, so we can obtain longitudinal and crossing forces for bridge complete analysis. The briefer shape functions are builty by means of Hermit method, the element stiffness matrix is derived according to principle of minimum potential energy from the strain metrix of thin plate and the stress matrix of lineral elastic mass. The accomplishment of HO3-FSM program and calculating examples prove that the HO curved strip method is briefer and preciser.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
1996年第3期42-47,共6页
Journal of Hefei University of Technology：Natural Science
基金
合肥工业大学科研基金
关键词
曲线梁桥
高阶曲线有限条
刚度法
混凝土
curved girder bridge.higher order ESM bridge complete analysis, stiffness method, utility program
